Ouch!

The model - who expecting her first child with rapper fiance Wiz Khalifa - is determined to have the baby without medical aid, even though she knows it will be painful.

She told XXL magazine: "I'm so ready. I've decided that I'm going to have an all-natural water birth. No medicine. I want those bragging rights! The next time Wiz has a stomach ache or anything, I'll say, 'I popped out a baby all-natural.'"

Amber, 28, also said she and Wiz will be waiting until after their son or daughter is born before resuming planning their wedding.

Wiz said: "It makes more sense for the baby to be in the wedding than for her to be pregnant. Some people, they rush and do it, but it works both ways."

Amber added: "Being pregnant, I'm tired a lot. So to have a wedding and planning it all out and the reception - I just don't want to be sleeping when everybody's partying at our wedding."

Amber - who is in her second trimester - also said she's not worried about her new arrival having affecting her modelling career.

She explained: "We're having a baby so that's more important to me than any career I could possibly have.

"I'm not one of those girls that's going to wait until they're 45. I just feel like I need to do what makes me happy."